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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor
其他任职：工程力学系主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：固体力学. 航空航天力学与工程. 计算力学. 工程力学
联系方式：haopeng@dlut.edu.cn
电子邮箱：haopeng@dlut.edu.cn
Isogeometric analysis and design of variable-stiffness aircraft panels with multiple cutouts by level set method
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论文类型：期刊论文
发表时间：2018-12-15
发表刊物：COMPOSITE STRUCTURES
收录刊物：SCIE
卷号：206
页面范围：888-902
ISSN号：0263-8223
关键字：Variable-stiffness aircraft panel; Cutout; Isogeometric method; Level set method; Gradient-based optimization
摘要：For composite panels with cutouts, curvilinear fiber path can adjust the in-plane stiffness distribution to increase the buckling resistance, but it results in huge computational cost for the buckling analysis when FEA is employed. In this study, variable-stiffness panels with cutouts are analyzed via isogeometric method, where cutouts are represented by the level set method. The method for suppressing artificial buckling modes is proposed to improve the prediction accuracy. Moreover, the analytical sensitivity is derived to facilitate fiber path optimization, and a new bi-level optimization framework considering manufacturing constraints is established. Finally, the proposed method is verified by variable-stiffness aircraft panel with multiple cutouts, which can not only provide an accurate prediction of buckling load, but also exhibit high convergence rate and low computational cost for fiber path optimization.